Glass finishing and polishing machine



July 241, 1923.

G. c. SCOTT GLASS FINISHING AND (POLISHING MACHINE Filed June 20. i921 4Sheets-Sheet 1 INVENTOR ROMEH w QQ' A TTOR/i/EYS July 1923. V I11,462,522

/ 5. Q'SCOTT GLASS FINISHING AND POLISHING MACHINE Fi led June 20. 19214 Sheets-Sheet 2 k3 H1! lilllllilil T Ll l/VVE/VTUR GFGVERCSCO IW;

A TTOR/VEVS WITNESSES July 24%, I923.

G. C. SCOTT GLASS FINISHING AND POLISHING MACHINE Filed June 20, 1921 4Sheets-Sheet 5 lNV Q/VTOR G 7 L. 50075 ATTORIQE Y8 Jufiy 24, 1923 G. C.SCOTT GLASS FINISHING AND POLISHING MACHINE Filed June 20. 1-921 4Sheets-Sheet 4 WITNESS/5 A TTORIVEVS invented certain new formapproaching the molten. state Patented July 243, 1923i,

GROVER CLEVELAND SCOTT,

or WATSON, wns'r vmemra.

GLASS FINISHING AND POLISHING IEACHINE.

Application filed June 20, 1921. Serial No. 478,854.

. To all whom it may concern Be it known that. I, GROVER CLEVELANDSoorr, acitizen of the United States, and a resident of Watson, in thecounty of Marion and State of VVest Virginia, have and usefulImprovements in Glass Finishing and Polishing Machines, of which thefollowing is a specification.

cal power and of ready adjustment to ac commodate heights.

Jith these glasses and tumblers of various general objects in mind myinvention resides in a machine constructed and operatingas now describedwith respect to the accompanying drawings, which a part of thisspecification andwhere- Figure" l is a side elevation of thecompletemachine,

lr igure 2 isa top plan view thereof, F igure 3 is a top plan View withthe top .plate removed,

-Figure-.4' is a .horizontal section,

F igure-5 isa detail perspective'view of the elevating mechanism,

Figure 6 is a detail perspective view of the cam controlling theelevating mechanism,

Figure 7 is a detail perspective view of the polishing member, Figure 8is a detail perspective view of one of the glass holders,

Figure 9 is a detail shifting wheel, and

Figures 10 and 11 are partial perspective views showing a drinkin' glassor tumbler res ectively before and a ter finishing.

t is a well known fact that pressed glasses are when initially formedslightly rough on the edges and parency, the first defect of which maybe corrected byrotation of the glass inthe presence of a flame playing.on its edge until the latter is heated to a point closely so that thematerial slightly runs and the roughness is My present invention relatesgenerally to chain travels perspective view of the of uncertaintrans--eradicated. The second defect may be overcome by pollshing the externalsurface of the glass.

My improved machine provides for the automatic accomplishment of boththe smoothing of the edge of the glass and the external polishingthereof, and is utilized in connection with-a heater such for instanceas-seen at 15 in Figures 1 and 2,'having lower openings 16 upwardly intowhich the upper edges be projected into the influence of the flame fromburners 17 or similar sources of heat. In accordance with myimprovements glasses are inserted first in one and then in the other ofthe openings-16 and successively subjected to the flame of the burners17 while in' rapid rotation, the operation being so timed that uponwithdrawal of each glass from the second opening its edge will havebeenaccomplished.

In my improved machine a series of cup shaped upwardly opening glassholders 18 are mounted upon the upper ends of stems 19, the latter ofwhich are ournaled for rotation' and vertical shifting movement inframes 20 secured to the outstanding portions 21 of spaced links of achain 22. This horizontally upon the upper surface of a table 23 andmoves at opposite endsof the tablearound sprocket wheels 24 and 25respectively secured upon the upper ends of upright shaft-s 26 and 27.

The shafts 26 and 27 rise from the lower plates 28 of a ends of whoseupright portions are secured by means of angle plates 30 to the centralportion of the table 23 so as to support the latter. The-lower end ofshaft 27 is adjustably mounted in the plate 28 and its upper end issimilarly adjustable in the slotted supporting bar 32 within theopposite end of which the upper end of shaft 26 is journaled, thissupportin bar 32 overlying the table 23 along the ongitudinal axis ofthe latter and also overlying a'cover plate 33 of the table, below theed e of which the outstanding links of the chain 22 project. Thisadjustment of shaft 27 pro-' vides for tightening or loosening of thechain 22 as may be desired.

Each of the stems 19 of the glass holders 18, one of which is shown indetail in Figure. 8, has a spur gear 84 splined thereon, said spur gearbeing confined within the lower portion of the respective frame 20 forportionv 31 of a of glasses or tumblers may pair of brackets 29 the.upper' the smoothing of engagement with the. peripheral teeth of alarge gear 35 journaled onthe shaft 27 below the table 23, intoconnection with which each of the glass holders moves as it approachesone end of the table 23 in the clockwise rotation of the chain 22,beneaththe elevated heater 15.

Gear 35 also has a downwardly presented toothed surface 36 and isprovided atone pointwith a depending cam 37, teeth 36 being engaged by apinion 38 in turn engaged by a gear 39 upon one end of a lower hori-:zontal shaft 40. The opposite end of this shaft has a gear 41 engagingone side of the lower toothed edge .of a horizontal gear Wheel 42 theopposite side of the lower edge of which is connected by gears 43* and lt of counter shafts 13 andete to the gear 4:5 of the shaft e6 of a motor46. Thus during rotation of the motor 46 the gear 35 rotating the glassholders at one end of the" machine is constantly rotated.

- Shaft 26 at the opposite end of the table has a wheel 47secured-thereon and provided with a series of circ'umferentially spacedupstanding pins 48 each of the latter of which is adapted for engagementby the upstandingangular arm 49 secured on the horizontal gear wheel 42previously described so that the wheel 47 will be partially rotatedduring each complete revolution of the ear wheel 42 and in this waybringabout intermittent rotation of the chain 22. Each shiftin movement ofthechain 22 in a clockwise direction shifts a pair of the glass holders18 to one end of the table upon relatively opposite sides of thelongitudinal axis thereof and beneath the heater 'o-pen- 'ings 16 at thesame time brings these holdersabove an arcuate elevating plate 50 whichisivertically :shiftable below and adjacent to one end of the table 23upon the I upper end of a vertically-shiftable stem 51.

This elevating plate is of sufficient length to simultaneously engagethe lower ends of the stems 19 of two of the cup holders in theoperating positions previously described be neath the heater openings sothat immediately following cessation of shifting movement of the chain22, the plate 50 by its upward movement will engage and shift the glassholder stems 19 vertically to project the upper portions of the' glasses52 upwardly into the heater 15 through its openings 16.

The elevating plate 50 may have, at one end, an adjustable stem engagingscrew member 50? as "seen in Figure5 so thateach glass may if desired belifted higher in the second opening of the furnace than in the firstopening. "By virtue of the splined connection of their gears 34: howeverandthe fact that these gears are confined in the lower portion of theholder frames 20,-said'gears will remain in engagement with the gear 35while; at the operating statiomboth in the upper and lower positions ofthe holders so that the latter particularly when inserted upwardly intothe heater 15, will be constantly rotated.

It is obvious from the foregoing that in operation each glass holderwill be shifted vertically at successive stages into the two heateropenings during intermittent rotation of the 'chain 22 and it is furtherto be observed that as each glass holder-is shifted toward and frombeneath the heater its gear 3 f will engage one of thexidle gears 53 atopposite sides of'the table in mesh with the horizontal gear ,35 so thatbetween shifting movementsof the chain each glass holder while withinthe influence of the heater will hefrotated to avoid unun'iform heating;At vthe second rotating or polishing station the external surface ofeach glass will be rotatedrin contact with'one concave face 54 of apolishing head 55, preferably formed of a suitable wood and mounted uponthe upper end of a stem 56. This stem is journaled on the cover plate 33and has diametrically outstanding-arms 57 and 58 the latter of which isengaged by a-spring 59 ready reception of the mixed holder carried glassagainst its concave face. The. stem 56 yields by rotation as therespective glass 52 continues its movement to the polishing station and,in the next intermittent shifting movement of the chain, passes fromsaid polishing station and out .of contact with the polishing head. v 7i The elevating plate 50 has'a lower inverted U-shaped piece 60 to whichis pivotally connected the forward end of a lever 61 fulcrumed as at 62upon the upper end of an upright 63 and engaged at its rear end by aspringtie whose function is to shift the plate 50'upwardly, cam 37engaging lever 61 toshift the plate 50 downwardly a ainst the tension ofspring 64;, the latter of which operates under control of an adjustablescrew stop 65 with which the spring engaged end of lever til-contacts soas to limit'upward movement of the elevating plate. i t

Thus each intermittent shifting movement of the chain 22 takes placewhile the cam 37 is in' engagementwith lever 61andthe elevating plate50i's in lowermost position, i

of themachine -are rnounted' upon avertically dj ustable.platform6 6andthis plat form is 111 turn adjustablefwithrespect to a base 67 by virtueof adjustable connect- -nection with the construction and operationlarge as well as ing screws 68 therebetween, so thatthe entire workingparts may be raised and lowered depending upon the particular ware inconnection with which it is to be used, it being understood that theglass or tumbler supporting cups 18 with their stems 19 may be removedand others inserted conforming to the size and shape of the articles tobe finished.

The machine is thus adapted to glasses and tumblers of various sizesfrom small to those with and without stems, the finished articles beingremoved and unfinished ones substituted after they have passed thepolishing or burnishing station' opposite the gear 53.

It is to be particularly noted that the an ticles are rotated not onlywhen they are elevated within the heater 15 but also while engaged withthe burnishing or polishing head 54, at other times remaining stationaryexcept for their intermittent shifting movement with and around thechain 22.

I claim:

1. A machine of the character described including an intermittentlymoving carrier in the formof a link chain, certain of the links of whichhave outstanding extensions, upright shafts at opposite ends of' thecarrier, a sprocket wheel on the upper end of each shaft, one of whichis loose and the other of which is rigid with its respective shaft,means having connection with the last .mentioned shaft forintermittently moving the carrier chain, a

gear revolubly mounted on the other shaft,

means. for constantly rotating the said gear, a frame secured to each ofthe said link extensions, a glass holder for each of the said journaledvertically slide vertically,and rotate, a gear splined on each stem' andconfined against sliding movement therewith in the frame, said gears ofsaid holders being engageable with the first mentioned gear at one endof the carrier, and means at the said end of the carrier for shiftingthe stems of the holders vertically while in rotation.

2. A machine of-the character described including a table, a carriermovable around and upon the table, upright shafts, one of which isrotatable, bers on the shafts, a gear wheel loose on the other shaft,means ing the first shaft and thus moving the carrier, means forconstantly rotating said gear, a vertically shiftable the gear, a camrotating with the gear for actuating said shiftable of glass holderseach having. a stem movable with the carrier member, and a gear splinedon the stem and engageable with the first named gear, and a frame on thecarrier for each holder, in which the holder stem is journaled to rotateframes including a stem through the frame to carrier actuating memforintermittently rotat member adjacent to member, a plurality,

above said shifting and shift vertically, and in which the gear of saidstem is freely rotatable and confined against vertical shifting movementwith the stem.

3. A machine of the character described including a table, a carriermovable around and upon theitable, upright shafts, one of which isrotatable, carrier actuating mem bers on the shafts, a gear wheel looseon the other shaft, means for intermittently rotating the first shaftand thus moving the carrier,vmeans for constantly rotating said gear, avertically shiftable member adjacent to the gear, a cam rotating withthe gear for actuatin said shiftable member, a plurality of glassliolders each having a stem movable with the carrier above said shiftingmemher, and a gear splined on the stem and engageab'le with the firstnamed gear, and a frameon the carrier for each holder, in

which the holder stem is journaled to rotate holders being independentlyrotatable and vertically shiftable, a constantly rotating gear adjacentto one end of the carrier and into and out of engagement with which theholders are successively shiftable during their movement with thecarrier and means engageablewith the holders While the latter are inengagement with the rotating gear, for shifting the holders verticallywith respect to the carrier. 7 i

5. A machine of'the character described including an intermittentlymovable carrier ofendless form, a plurality of glass holders supportedat spacedv points therearound and movable therewith, each of saidholders being independently rotatable and vertically f shiftable, aconstantly rotating gear adjacent to one end of-=the carrier and withwhich the holders are successively engageable during their movement withthe carrier, and means en ageable with the holders While the latterirein engagement with the rotating gear, for shifting the holdersvertically with respect to the carrier, said means including an arcuateelevating plate, a lever one end of which is pivotally connected to thesaid plate, a controlling spring en aging the opposite end of the lever,to ho d its upper position,

said gear and engage the elevating plate" in connected to the saidplate, a controllingable with the lever to depress the elevating plate.

6. A machine of the character described including an intermittentlymovable car- 'rier of endless form, a pluralit of glass holderssupported at spaced points therearound and movable therewith, each ofsaid holders being independently rotatable and.

vertically shiftable, a constantly rotating gear adjacent to one end ofthe carrier and with which the holders are successively engageableduring their movement with the carrier, and means engageable with theholders While the latter are in engagement with the rotating gear, forshifting the holdersvertically with respect to the carrier, said meansincludin an arcuate elevating plate, a lever one en of which ispivotally spring enga ingthe opposite end of the lever, to hold theelevating plate in its upper position, a cam rotating in connection withthe said gear and engageable with the lever to depress the elevatingplate, and means engaging the spring controlled end of the lever toregulate-the extent of upward movement of the elevating plate under thetension of the spring.

7. A'machine of the character described including an intermittentlymovable carrier'of endless form, a plurality of glass holders supportedat spaced points there around and movable therewith, each of saidcarrier,

'ers verticall.

holders being independently rotatable and,

vertically shiftable, a constantly rotating gear adjacent to one end ofthe carrier and with which the holders are successively engageableduring their movement with the holders while the latter are inengagement with the rotating ear, for shifting the holdwit said meanslncluding an arcuate elevating plate, a lever one end of which ispivotally connected to the said plate, a controlling spring lever, tohold the elevating plate in its upper position, a cam rotating inconnection with the said gear and engageable with the and meansengageable with therespect to the carrier,

engaging the opposite end of the.

lever to depress the elevating plate, a bracket, and an adjusting screwthreaded in the bracket and forming an adjustable stop for the springcontrolled end of the lever for the purpose described. V

8. A machine of the character described comprising a table, an endlessflexible carrier on the table including a-plurality of holders supportedby and movable with the carrier, a table on which the carrier operates,means for moving the carrier, means with which the holders are shiftableinto and out of engagement for rotating the holders, and a polishinghead mounted to oscillate on the table and disposed in the path ofmovement of the holders to engage 1 the latter while they are inrotation.

10. A machine of the character described including an intermittentlymoving carrier, a plurality of independently rotatable glass holderssupported by and movable with the carrier, a table on which the car--rier operates, means with which the holders are shiftable into and outof engagement for rotating the holders, and a polishing head mounted tooscilate on the table and disposed in the path of movement of theholders to engage the latter while they are in rotation,

said polishing head having a concaveglass I engaging surface and havingoutstanding arms, and a spring controlling oscillation of the headengaging one of said arms.

GROVER CLEVELAND SCOTT.

means for moving the carrier,

